After a research programme on religious, Islamic and Biblical fundamentalism, and a deconstructivist approach to fundamentalism, we thought it was important to approach the notion of authority in link with religion, especially in Islamic context. Persons with authority or identified places of authority are not a simple process. This is all the more true in the Sunni Muslim tradition, the absence of a designation by the Prophet of an institution willing to regulate the religious questions will open the way to a plurality of modalities that may be of theological or theological-political nature.